Maybe you can check the vm network filter.
Take a look at Network -> vNic profile -> <name of VM network> and
choose edit. If "Network Filter" has the default value
"vdsm-no-mac-spoofing", it can prevent bridge normal behaviour. Maybe
"No network filter" can do the magic.
HTH.
Cheers,
Giulio
On 14/05/2020 17:16, Stefano Danzi wrote:
Il 14/05/2020 12:50, Dominik Holler ha scritto:
>
>
> On Wed, May 13, 2020 at 9:44 PM s.danzi <s.danzi(a)hawai.it
> <mailto:s.danzi@hawai.it>> wrote:
>
> Hi to all!
>
> I'm having an issue with networks bridges on ovirt node.
>
> It's look like this bug:
>
https://bugzilla.redhat.com/show_bug.cgi?id=1279161
>
> On VM I have a bridge between a tap device and network interface.
> On node side the interface is bridged with bond0 vlan 128
> (bond0.128 lacp).
>
> When I ping an host on the other side of tap device I can see this:
>
> Arp request goes from my lan to the tap device on vm. Arp reply
> return from tap vm and bridge forward this to vm networks
> interface. Using tcpdump on vm interface on node I can see the arp
> reply, using tcpdump on bond0.128 or on bridge I can't see the arp
> reply. Arp request is forwarded from bond0.128 to vm net but arp
> reply isn't forwarded from vm net to bond0.128.
>
>
>
> Any chance that there is network filtering involved?
> Please check if the related vNIC profile has No Network Filter.
> If there is a Network Filter set, please shutdown the VM, set to No
> Network Filter in the vNIC profile, and start the VM again and check
> if the issue is gone.
Hi! No Network filter.... It was my first check.
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--
Giulio Casella giulio at di.unimi.it
System and network architect
Computer Science Dept. - University of Milano